... the PASSIVE: MODALS ở dạng bị động.Example : 1. Humans must keep water, air, and land clean Water, air, and land must be kept clean .2. Governments must stop illegal trade of whales. Illegal ... weekend, but I am not sure. a. might b. need c. must d. should7. You _______ now if you wish. Tài Liệu Dùng Kèm SGK 12 By giao su p3S + MODAL + HAVE + V3/ED should, mus ,needn’t S + modal ... energy, our life will certainly_______. A. affected B. be affecting C. affect D. be affected Tài Liệu Dùng Kèm SGK 12 By giao su p5Unit 10 – ENDANGERED SPECIES Language focusa. must leave...